=Broccoli.= See Cabbage. =Brodiæa=, Hookera. _Liliaceæ._ Increased by offsets, which should be left undisturbed with the parent bulbs till they reach a flowering state, when they may be divided and planted in autumn. =Bromelia.= _Bromeliaceæ._ Some are propagated by seeds. All by cuttings inserted in sand, in heat. =Bromus.= _Gramineæ._ Increased by seeds sown outside in late summer or in spring, thinning out when necessary. =Brongniartia.= _Leguminosæ._ Increased by cuttings of the young shoots, which, if firm at the base, will root in sand under a bell-glass, in a cool house. =Brosimum= (Bread Nut). _Urticaceæ._ Propagated by cuttings of ripe wood with their leaves on. Place in sand in moist heat. =Broughtonia.= _Orchideæ._ Increased by dividing the plant. (See under Orchids.) =Broussonetia= (Paper Mulberry). _Urticaceæ._ Propagated by seeds, sown when ripe or kept till the following spring; and by suckers and cuttings of ripened wood, inserted in autumn in a cool house. =Browallia.= _Scrophularineæ._ Seeds. To have blooming plants by holidays they are propagated by seeds, sown in spring or summer in pans or pots of light, rich, sandy soil, and kept in a close frame or hand-light, where they can be shaded till germination takes place. =Brownea.= _Leguminosæ._ Increased by cuttings from the ripened wood; place in sand under a hand-glass, in moist heat. =Brownlowia.= _Tiliaceæ._ Propagated by cuttings made from ripe shoots; place in sand, under a hand-glass, in heat. =Brucea.= _Simarubeæ._ Increased by cuttings from ripened wood, which will root freely in a pot of sand under a hand-glass, in moderate heat. =Brugmansia.= See Datura. =Brunfelsia=, Franciscea. _Scrophularineæ._ Propagated by cuttings placed in sand under a bell-glass in moderate heat. When rooted, place in pots with a compost of loam, leaf soil, peat and sand. =Brunia.= _Bruniaceæ._ Increased by cuttings of young shoots, which root freely in sand under a hand-light in summer. =Brunonia.= _Goodenovieæ._ Propagated by divisions in early spring before repotting. =Brussels Sprouts.= See Cabbage. =Brunsvigia.= _Amaryllideæ._ Increased by offsets of considerable size. They should be potted carefully in a mixture of sandy loam and peat, with good drainage, and kept tolerably warm and close until established; water sparingly until root action has commenced. The best place for growing the offsets into a flowering size is on a shelf near the glass, in a temperature of from 50° to 55°. =Brya.= _Leguminosæ._ Propagated by seeds or cuttings placed in a hot-bed. =Bryonia.= _Cucurbitaceæ._ Propagated by seeds, or by divisions of the tuber. =Bryophyllum.= _Crassulaceæ._